ASTROSAT CZTI

Data Quality Report

Orbit 17485

Creation date: 2024-06-27T17:37:17.401686
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_051T01_9000002588_17485cztM0_level2.evt modeM0/AS1T03_051T01_9000002588_17485cztM0_level2_quad_clean.evt
Size (bytes)576,400,32084,499,200
Size549.7 MB 80.6 MB
Events in quadrant A3,407,081550,510
Events in quadrant B3,532,026556,797
Events in quadrant C3,404,711531,703
Events in quadrant D6,696,911491,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137702
B0141132
C0137552
D0241152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61351402.281989%
B61351532.493888%
C61351562.542787%
D6135113018.418908%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7440 6135 24 24 0.32% 0.39%
B 7440 6135 22 22 0.30% 0.36%
C 7440 6135 0 0 0.00% 0.00%
D 7439 6134 960 960 12.90% 15.65%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 88136 509.53 863 847 171.3
A 0 226 7731 40.18 863 847 171.3
A 12 194 6429 32.58 863 847 171.3
B 0 244 105799 659.82 850 832 159.1
B 6 36 20629 124.44 850 832 159.1
B 0 197 19383 116.61 850 832 159.1
C 14 238 129424 678.34 827 835 189.6
C 5 218 36585 188.59 827 835 189.6
C 3 233 10568 51.34 827 835 189.6
D 1 52 2437266 12382.49 772 753 196.8
D 13 189 828763 4207.99 772 753 196.8
D 7 238 190787 965.76 772 753 196.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter